Catalytic hydrogenation of soybean oil-derived fatty acid methyl esters over Pd supported on Zr-SBA-15 with various Zr loading levels for enhanced oxidative stability

2018 ◽  
Vol 179 ◽  
pp. 422-435 ◽  
Author(s):  
Chachchaya Thunyaratchatanon ◽  
Apanee Luengnaruemitchai ◽  
Nuwong Chollacoop ◽  
Shih-Yuan Chen ◽  
Yuji Yoshimura
Keyword(s):  
Fatty Acid ◽  
Soybean Oil ◽  
Oxidative Stability ◽  
Catalytic Hydrogenation ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Acid Methyl

Evaluation of Dominant Parameters in Lipase Transesterification of Cottonseed Oil

2019 ◽  
Vol 62 (2) ◽  
pp. 467-474 ◽  
Author(s):  
Stanley Anderson ◽  
Terry Walker ◽  
Bryan Moser ◽  
Caye Drapcho ◽  
Yi Zheng ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Oxidative Stability ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Cottonseed Oil ◽  
Molar Ratio ◽  
Chromatography Method ◽  
Induction Periods ◽  
Acid Methyl ◽  
The Difference

Abstract. Eversa Transform was used as an enzymatic catalyst to transform glandless and crude (heavy pigment) cottonseed oils into biodiesel. The oils were reacted with methanol at a 6:1 molar ratio with modified amounts of water, lipase, and temperature. Reactions were conducted in the presence of lipase and water at doses of 2, 5, and 8 wt% and 1, 3, and 6 wt%, respectively. Product composition and conversion were determined using the gas chromatography method of ASTM D6584. Oxidative stability was determined following EN 15751. The conversion to fatty acid methyl esters averaged 98.5% across all samples. Temperature had the most significant effect on conversion (p < 0.0035). Lipase and water dosages did not affect conversion, while each had an effect with temperature that was significant across the difference between 3 and 1 wt% water content and between 8 and 5 wt% enzyme content between the two temperatures (p = 0.0018 and 0.0153), respectively. Induction periods (oxidative stability) of the glandless and crude cottonseed oils were significantly different, but there was no difference between the two oil conversions based on oil type. Keywords: Biodiesel, Cottonseed oil, Fatty acid methyl esters, Lipase, Oxidative stability, Transesterification.

Catalytic hydrogenation of CC and CO in unsaturated fatty acid methyl esters

2014 ◽  
Vol 4 (8) ◽  
pp. 2427-2444 ◽  
Author(s):  
Chaoquan Hu ◽  
Derek Creaser ◽  
Samira Siahrostami ◽  
Henrik Grönbeck ◽  
Houman Ojagh ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Catalytic Hydrogenation ◽  
Unsaturated Fatty Acid ◽  
Reaction Mechanisms ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Acid Methyl ◽  
Recent Developments

Review summarizing recent developments in hydrogenation of CC and CO in FAMEs focusing on catalysts, reaction mechanisms, and reactor conditions.

Catalytic hydrogenation of fatty acid methyl esters

2012 ◽  
Vol 85 (2) ◽  
pp. 261-266 ◽  
Author(s):  
V. A. Pozdeev ◽  
S. P. Safronov ◽  
S. V. Levanova ◽  
E. L. Krasnykh
Keyword(s):  
Fatty Acid ◽  
Catalytic Hydrogenation ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Acid Methyl

Synthesis of Biodiesel by Different Carriers Supported KOH Catalyst

2012 ◽  
Vol 581-582 ◽  
pp. 197-201 ◽  
Author(s):  
Ling Mei Yang ◽  
Peng Mei Lv ◽  
Zhen Hong Yuan ◽  
Wen Luo ◽  
Hui Wen Li ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Soybean Oil ◽  
Heterogeneous Catalysts ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Molar Ratio ◽  
Reaction Conditions ◽  
Catalyst Amount ◽  
Acid Methyl ◽  
And Performance

Transesterification of soybean oil with methanol to methyl eaters was found proceed in the presence of KOH loaded on five different oxides (CaO, MgO, Al2O3, Bentonite, kaolin) as heterogeneous catalysts. The structure and performance of these catalysts were studied using the techniques of XRD, CO2-TPD, and SEM. It was found that the 15wt% KOH/CaO catalyst provided best activity. In the presence of this catalyst, the yield of fatty acid methyl esters was 97.1%. The reaction conditions were as follows: methanol to soybean oil molar ratio was 16:1, temperature of 65 °C, reaction time of 1 h, and a catalyst amount of 4 wt%. The catalysts of KOH loaded on CaO showed a new crystalline phase of K2O. However, the catalyst of 15-KOH/CaO has more basic sites than the catalyst of 15-KOH/MgO. Therefore, the catalyst of 15-KOH/CaO has been associated with higher transesterification activity.

scholarly journals Creosote Bush (Larrea tridentata) Extract Assessment as a Green Antioxidant for Biodiesel

Molecules ◽  
2019 ◽  
Vol 24 (9) ◽  
pp. 1786 ◽  
Author(s):  
Carlos A. Sagaste ◽  
Gisela Montero ◽  
Marcos A. Coronado ◽  
José R. Ayala ◽  
José Á. León ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Oxidative Stability ◽  
Antioxidant Capacity ◽  
Fatty Acid Methyl Esters ◽  
Methanolic Extract ◽  
Methyl Esters ◽  
Larrea Tridentata ◽  
Creosote Bush ◽  
Antioxidant Power ◽  
Acid Methyl

In this work, the antioxidant properties of methanolic extract of Larrea tridentata were assessed through the free radical scavenging method, ferric reducing antioxidant power and oxygen radical absorbance capacity. The phenolic acids content in the extract was quantified by high-performance liquid chromatography (HPLC) and the total phenol content by the Folin–Ciocalteu method. The extract was used as an antioxidant in biodiesel from canola oil composed mostly by fatty acid methyl esters identified and quantified by gas chromatography-mass spectrophotometry (GC-MS). The performance of the extract as an antioxidant was assessed by the oxidative stability index (OSI) with a Rancimat equipment at 100, 110, 120 and 130 °C. Additionally, the change of the peroxide value (PV) and the higher heating value under conditions of oxidative stress at 100 °C and air injection were measured. The antioxidant capacity of the extract reached 50,000 TAEC (micromole of Trolox antioxidant equivalent capacity per gram). The biodiesel was constituted by more than 70% of unsaturated fatty acid methyl esters (FAME), mainly methyl oleate. The time needed to reach a PV of 100 meqO2/kg was almost four times longer with an antioxidant concentration of 250 mg/L than the blank. The biodiesel showed an OSI time of 1.25 h at 110 °C, while it increased to 8.8, 15.89 and 32.27 h with the antioxidant at concentrations of 250, 500 and 1000 mg/L, respectively. The methanolic Larrea tridentata extract proved to have an antioxidant capacity and it is a green antioxidant in biodiesel to increase its oxidative stability. According to the results obtained, the L. tridentata methanolic extract is an alternative to the commercial synthetic antioxidants used in biodiesel nowadays.

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